The invention discloses a device for facilitating a bridge detection vehicle to pass through a cover beam of a bridge pier. The device is characterized by comprising a transition orbit (6), a front lifting orbit (3), a rear lifting orbit (7) and an orbit lifting mechanism, wherein the transition orbit (6) is fixedly arranged below a cover beam requiring a detection vehicle to pass through along the extension direction of a bridge; the front lifting orbit (3) is arranged in front of the vehicle coming direction of the transition orbit (6) and can move between a descending position smoothly connected with the transition orbit (6) and an ascending position smoothly connected with a detection vehicle travelling orbit; the rear lifting orbit (7) is arranged at the rear of the vehicle coming direction of the transition orbit (6) and can move between the descending position smoothly connected with the transition orbit (6) and the ascending position smoothly connected with the detection vehicle travelling orbit; and the orbit lifting mechanism is used for lifting the front lifting orbit (3) and the rear lifting orbit (7) between the ascending position and the descending position. According to the technical scheme, the detection vehicle can successfully pass through the cover beam of the bridge pier, and the detection task of the whole bridge can be finished by using the one detection vehicle, so that the amount of the detection vehicle is reduced.